Unify time tracking on server-backed entries with updateRunning.

Consolidates dashboard and invoice timers onto shared time-entry APIs so clock-in state, invoice linking, and clock-out flow stay consistent across surfaces.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/app/dashboard/invoices/[id]/page.tsx

@@ -523,11 +523,7 @@ function InvoiceViewContent({ invoiceId }: { invoiceId: string }) {
         {/* Right Column - Actions */}
         <div className="space-y-6">
           {effectiveStatus !== "paid" && (
-            <InvoiceTimerCard
-              invoiceId={invoiceId}
-              clientId={invoice.clientId}
-              defaultRate={invoice.client?.defaultHourlyRate}
-            />
+            <InvoiceTimerCard invoiceId={invoiceId} clientId={invoice.clientId} />
           )}
 
           <Card className="lg:sticky lg:top-6">